Joseph bethenod



1. BETHENOD,

RADIOTELEGRAPHIOCOUPLING. APPLICATION FILED raanlskl zz.

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JOSEPH BETHEIQ'OD, F ZARIS, FBANCE,

RADIOTELEGRAPEIC CQUFLING.

. Original application filed September 2, 1919, Serial Ito. $21,259. Divided and this application nary 16, 1922. Serial No. 536,927.

To all whom it may concern:

Be it known that I, J OSEPH BETHENOD, a citizen of the French Republic, residing at Paris, France have invented certain new and useful improvements in Radiotelegraphic Couplings (for which I have filed applications in France March and July 30, 1918) of which the following is a specifithe drawing, the armature windings are divided up into a number of parts C C G I and all these partial windings of the alternator and all the primary windings of the transformers T T T are coupled in series in a single circuit to cause the partial Windings of the alternator and the primary wind- 1 ings of the transformers to alternate in the order of this coupling, the secondaries of the said transformers being coupled up in series for example and the whole being connected between the antenna A and the earth E.

The tension created in bne fraction or section of the generator winding (such as Q) is balanced by the voltage loss in the primary winding of the corresponding transformer (such as T ;'the maximum tension to which the insulators of the generator are subj ected is therefore found to be the same as if the fractions of the winding were electrically independent.

I claim as my invention 2-- 1. A radiotelegraphic station, comprisingin combination a high frequency alternator 1n WhlCll the armature winding 1s (l1V1ded into several sectlons' not comprising any direct electric connection between them, and

a complex of transformers magnetically independent of each other, the number of transformers being equal to that of the said sections of the armature, the primary windings of the transformers being inserted in series in a circuit alternately with the sections of the armature, and the: secondary windings of these transformers being connected to the transmitting antenna in a suitable manner. v

2. A radiotelegraphic station comprising in combination a high frequency alternator in which the armature winding is divided into a plurality of sections having no direct electrical connection with each other,and a complex of transformers magnetically indeendent of each other, the number of transormers being equal to the number of the said sections, and the primary windings of the transformers being inserted in series in a circuit and alternating with the said sections whilst the secondary windings of the transformers are coupled up in series and are all connected up between the antenna and the earth. I

In testimony whereof I have hereunto affixed my signature JOSEPH BETHENOD. 

